Article of manufacture for destroying insects



June 11, 1957 L. w. GOPP 2,795,527

ARTICLE OF MANUFACTURE FOR DESTROYING 'INSECTS' Filed Au 20, 1955 E K g R v INVENTORI .w y

- ATTORNEYS:

ARTICLE OF ACTURE FOR DESTROYING INSECTS Leonard W. Gopp, Barrington, 111., assignor to Chemical Marketing Corporation, Chicago, Ill., a corporation of Illinois Application August 20, 1953, Serial No. 375,388

3 Claims. (Cl. 167-48) This invention relates to a nowe and improved article of manufacture for destroying insects such as flies, and it relates more particularly to a means adapted for use in open structures, such as in cattle barns, chicken coops, porches and the like, to keep the structures substantially free of insects.

It is an object of this invention to produce an article of manufacture of the type described and compositions for use in same.

These and other objects and advantages of this invention will hereinafter appear and for purposes of illustration, but not of limitation, an embodiment is shown in the accompanying drawing in which:

Figure l is a schematic view in elevation of a device embodying features of this invention in position of use for destroying insects, and

Figure 2 is an enlarged sectional elevational view of the article of manufacture illustrated in Figure 1.

It has been found, in accordance with the practice of this invention, that an area, whether completely or only partially confined, can be kept substantially free of insects such as flies with a device suspended within the area and formed of an absorbent carrier, such as a string, cord or rope, or paper impregnated with parathion and surface treated with thiamine hydrochloride, preferably contained in a sugar or glucose base.

The following specific example of the practice of this invention is given by way of illustration, but not by way of limitation:

Example A string 20 or yarn formed of absorbent fibers such as cotton, hemp, Wool, flax or the like, is impregnated by immersion in a 10 percent solution of parathion in xylene. After the impregnated string or yarn has dried to deposit the parathion 21 throughout the fibers, an aqueous solution containing one part by weight thiamine hydrochloride per 1000 parts by weight and percent by weight brown sugar is sprayed in amounts to wet the outer surfaces of the impregnated carrier so that the thiamine hydrochloride 22 will remain in high concentration in the surface portions of the treated string.

When dried, the string, impregnated with parthion and containing thiamine hydrochloride on the surface portions, is preferably hung from a beam or rafter within the structure. The insect is killed within a very short period of contact with the treated string. To attract flies and other insects to the string, it has been found desirable to suspend the treated string in loops 23 from the support.

:- atent 'ice The amount of parathion may vary depending upon the type of absorbent material used and it is therefore difficult to limit the amount necessary in the absorbent material. Positive results have been secured, however, by use of impregnating solutions containing from 12-20 percent by weight of parathion. Instead of Xylene, other solvents in which parathion is soluble can be used to form the impregnating solution.

Thiamine hydrochloride can be replaced, in part, by other B vitamin compounds but best results in the elimination of flies from the area have been secured with thiamine hydrochloride as a .component in combination with parathion. The concentration of thiamine hydrochloride in the spray composition may be varied over a fairly wide range depending upon the absorbent carrier but it is expedient to make use of a solution containing from one part to 20 parts by Weight thiamine hydrochloride per 1000 parts by weight of solution. The brown sugar does not constitute an essential ingredient in the spray composition. Instead of brown sugar, use may be made of other carbohydrates such as sucrose, glucose, starches and the like, in amounts from 1-20 parts by weight of the spray composition. Application of the thiamine hydrochloride may be made by other systems such as solution in other media or dispersions and means other than spraying may be used to coat the impregnated carrier.

,It will be understood that other means may be employed for impregnating the carrier with parathion and for surface coating the impregnated carrier with the thiamine hydrochloride compound without departing from the spirit of the invention, especially as defined in the following claims.

I claim:

1. An article of manufacture for destroying flying insects comprising an absorbent carrier, parathion impregnating the carrier and thiamine hydrochloride concentrated on the surfaces of the carrier.

2. An article of manufacture for destroying flying insects comprising a string, the string being impregnated with parathion and having thiamine hydrochloride concentrated on the surface portions thereof.

3. An article of manufacture for destroying flying insects comprising an elongate string formed of absorbent fibers, parathion impregnating the string and thiamine hydrochloride in a glucose base concentrated on the surface portions of the string.

References Cited in the file of this patent UNITED STATES PATENTS 206,209 Allan July 23, 1878 2,086,046 Preston July 6, 1937 FOREIGN PATENTS 150,758 Great Britain Sept. 6, 1920 OTHER REFERENCES Moncrief: Mothproofing, Leonard Hill Ltd., London, pp. 111-112 (1950).

Brown: Insect Control by Chemicals, John Wiley & Sons, Inc., N. Y. 0., pages 17-18 (1951). 

1. AN ARTICLE OF MANUFACTURE FOR DESTROYING FLYING INSECTS COMPRISING AN ABSORBENT CARRIER, PARATHION IMPREGNATING THE CARRIER AND THIAMINE HYDROCHLORIDE CONCENTRATED ON THE SURFACES OF THE CARRIER. 